SM852B 3-Phase Rotation Tester Digital Phase Indicator Detector LED Buzzer Phase Sequence Meter

Features:
One Unit with two functions: check the phase sequence and indicate the phase is open or not.
Safe and reliable: with clips, easily involve the terminals of the control panel, guaranteeing reliability and safety.
Wide voltage test: it can check 60V to 600V AC three-phase voltage, high performance.
Easy to use: with LED light to show if the phase is open or not,supports buzzer indication.
Portable design: small and light weight for easy carrying.